To answer that question, let’s start with what’s changed. The core social platforms, Facebook and Twitter, have continued to explode. Mobile has enabled a host of new social platforms such as Pinterest and Snapchat to grow at breakneck speed. LinkedIn has added informational content like LinkedIn Today, LinkedIn Influencer and sponsored updates. Google has built a massive social system with the deepest mobile integration of any platform we’ve ever seen (thanks to Google’s Android mobile operating system). “Native” advertising has come to the fore. And search and social have crashed together: According to SearchMetrics, seven of the top eight signals in social now come from search.